CN217413674U - Flexible sponge sand paper - Google Patents

Abstract

The utility model provides a flexible sponge abrasive paper sets up the effectual pliability that improves sponge abrasive paper in polyurethane block layer through the interval, is particularly useful for unevenness and waits to polish work piece equipment of polishing, has higher precision and good grinding effect.

Description

Flexible sponge sand paper

Technical Field

The utility model discloses in coated abrasive tool technical field, relate to an abrasive paper, specific flexible sponge abrasive paper that says so.

Background

The sponge abrasive block is also called sponge abrasive block, polishing abrasive block, resin abrasive block, abrasive material abrasive block, plastic abrasive block, etc. sponge is used as base body, and the sponge is planted with one kind of polishing material of abrasive sand, which is suitable for curved surface grinding, can absorb water and maintain long-term water grinding, and may be made into various shapes and sizes.

The base material of the sponge sand paper for furniture production is cloth and paper, the paper tape base is a tape base which uses specially treated high-strength paper as sponge sand paper, and the price of the sponge sand paper of the paper tape base is 1/3-2/3 lower than that of the sponge sand paper of the cloth tape base. The paper tape base is hard, can grind a surface with high smoothness, and is used for fine grinding and ultra-fine grinding. The cloth belt base has higher strength than the paper belt base, has lower sensitivity to temperature and humidity than the paper belt base, does not lose stability due to the increase of temperature and humidity, and has higher durability than the cloth sponge abrasive paper. The common abrasive materials in furniture production are alumina, silicon carbide, zirconia aluminum, garnet and manual abrasive paper, and glass sand is used as the abrasive materials, and the abrasive materials have the characteristics of coarse grinding, large plasticity, large grinding area, coarse granularity for avoiding chip embedding, soft workpieces and the like, and fine granularity for fine grinding, hard workpieces and the like. The abrasive is bonded to the tape base by a binder. The binder should have strength, elasticity, heat resistance, water resistance, and the like. The common adhesives are two types of animal glue and synthetic resin. The animal glue is not water-resistant, and the synthetic resin has good water resistance. The waterproof sponge sand paper adopts waterproof synthetic resin as a primer and a compound adhesive and is subjected to strict waterproof treatment. According to the functions of the belt base, the abrasive and the binder, the requirement of sanding can be met by selecting the proper belt base, the abrasive particles and the binder according to the requirements of a processing object and a process technology.

The coated abrasive articles commonly used are currently classified into two broad categories based on the substrate classification:

1. paper base material: the paper is prepared by coating various hard abrasive materials on a paper base, and the paper has the advantages that: the price is low, and the production is easy; the disadvantages are that: easy to tear, not good enough tension, slow heat dissipation, uneven grinding stress of the processed workpiece and unsatisfactory precision machining;

2. cloth base material: it is made up by coating various hard abrasive materials on cloth base, and the basic properties of said product are similar to those of paper product, and its advantages are: the tensile resistance is large, the deformation is not generated, and the grinding force is stronger than that of paper-based products.

As CN 103406836A: a high-precision sponge sand and a manufacturing method thereof comprise the following steps of selecting a sponge substrate layer; preparing a grinding material and glue mixture; selecting a thin film layer, and blade-coating the abrasive material and glue mixture prepared in the second step on the thin film layer to form an abrasive material and glue mixture layer on the thin film layer; drying the thin film layer coated with the grinding material and glue mixture layer in a scraping mode to dry glue in the grinding material and glue mixture layer, and exposing the grinding material layer in the grinding material and glue mixture layer to the surface of a glue layer after the glue is dried; bonding the film layer processed in the fourth step with the sponge base material layer to obtain a high-precision sponge sand finished product; according to the invention, the ultrafine grinding materials with the particle size of 240-2500 meshes can be compounded on the sponge base material to prepare the high-precision sponge sand, and the sponge sand not only has the function of ultrafine grinding, but also has a smooth grinding material layer, high grinding material utilization rate and long service life.

Therefore, the current few technologies have the following main problems: (1) how to increase the adhesive force of the abrasive and the sponge and make the abrasive more uniformly distributed, so that the abrasive is not easy to fall off during polishing and is uniformly polished, thereby prolonging the service life; (2) how to increase the elasticity and flexibility of the whole sponge sand paper; (3) how to improve the surface flatness of the abrasive material layer and enable the product to be used for polishing products with higher surface precision.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem that exists among the prior art, the utility model provides a flexible sponge abrasive paper sets up the effectual elasticity and the pliability that improves sponge abrasive paper in polyurethane block layer through the interval, is particularly useful for unevenness and treats the work piece equipment of polishing, has higher precision and good grinding effect.

The specific technical scheme is as follows:

as shown in figures 1 and 2: the utility model provides a flexible sponge sand paper, sponge sand is by supreme sponge layer 1, first glue film 2, polyurethane block layer 3, second glue film 4, the sand bed 6 of including in proper order down, flexible sponge sand is including tearing mould layer 5 in the preparation process, the preparation process includes following step:

(1) taking sponge sand 1 with proper size;

(2) taking a middle layer assembly, wherein the middle layer assembly comprises a first adhesive layer 2, a polyurethane block layer 3, a second adhesive layer 4 and a tearable mold layer 5 from bottom to top, and the tearable mold layer 5 is positioned on the second adhesive layer 4 and in a gap between the polyurethane block layer 3;

(3) bonding the sponge sand 1 and the middle layer assembly through the first glue layer 2;

(4) and after tearing off the tearable mold layer 5, planting sand to form a sand layer 6.

Further, the sand layer 6 is selected from one of silicon carbide, zirconia corundum and white quartz sand.

Further, the viscosity of the first adhesive layer 2 is significantly greater than the viscosity of the second adhesive layer.

Further, the first glue layer 2 is selected from phenolic resin or urea resin.

Further, the second glue layer 4 is selected from epoxy resin.

Further, the thickness of the sponge layer 1 is 1-2 cm.

Further, the thickness of the first glue layer 2 and the second glue layer 4 is 0.1-0.15 cm.

Further, the thickness of the tearing-off mold layer is more than the sum of the thicknesses of the polyurethane block layer 3 and the second adhesive layer 4.

Further, the thickness of the polyurethane block layer is 0.2-0.3 cm.

Furthermore, the sand planting is one of static sand planting, spraying sand feeding and gravity sand planting.

Compared with the prior art, the utility model discloses at least, following advantage has:

(1) set up effectual elasticity and the pliability that has improved sponge abrasive paper of polyurethane lump layer through the interval.

(2) Through setting up the polyurethane lump layer, increase abrasive material and sponge adhesive force when can effectual improvement is planted the sand to make the more even distribution of abrasive material, thereby improve efficiency and the effect of polishing, the abrasive material is also difficult for droing when polishing, improves life.

(3) Can effectually protect massive polyurethane through setting up tear mould layer 5, convenient transportation and commercialization.

(4) The whole product is stable in structural performance through bonding, and the surface flatness of the abrasive material layer enables the product to be used for polishing products with higher surface precision, and the product also meets the overall flexible design.

(5) Because the viscidity of first glue film 2 is obviously greater than the viscidity 4 of second glue film, conveniently can tear getting rid of on mould layer, simultaneously because the clearance on polyurethane piece layer is less, the adhesive strength between the clearance is high, conveniently adsorbs the abrasive material. Finally, a uniform abrasive surface layer is obtained.

Drawings

Fig. 1 is a structural diagram of sponge sand paper designed by the present invention;

fig. 2 is a top view (a) and a curved view (b) of the sponge sandpaper of the present invention.

Wherein, 1, sponge layer; 2. a first glue layer; 3. a polyurethane block layer; 4. a second adhesive layer; 5. a tearable mold layer; 6. and (5) a sand layer.

Detailed Description

A flexible sponge sand paper comprises a sponge layer 1, a first glue layer 2, a polyurethane block layer 3, a second glue layer 4 and a sand layer 6 from bottom to top in sequence, wherein the flexible sponge sand comprises a tearable mould layer 5 in the preparation process, the polyurethane block layer 3 is formed by arranging a plurality of polyurethane blocks at intervals, the length, the width and the height of each polyurethane block are 0.2-0.4cm, 0.2-0.3cm and the distance between every two adjacent polyurethane blocks is 0.05-0.075cm,

the preparation process comprises the following steps:

(1) taking sponge sand 1 with proper size;

(2) taking a middle layer assembly, wherein the middle layer assembly comprises a first adhesive layer 2, a polyurethane block layer 3, a second adhesive layer 4 and a tearable mold layer 5 from bottom to top, and the tearable mold layer 5 is positioned on the second adhesive layer 4 and in a gap between the polyurethane block layer 3;

(3) bonding the sponge sand 1 and the middle layer assembly through the first glue layer 2;

(4) and after tearing off the tearable mold layer 5, planting sand to form a sand layer 6.

The sand layer 6 is selected from one of silicon carbide, zirconia alumina and white quartz sand.

The viscosity of the first adhesive layer 2 is significantly greater than the viscosity of the second adhesive layer.

The first glue layer 2 is selected from phenolic resin or urea resin.

The second glue layer 4 is selected from epoxy resin.

The thickness of the sponge layer 1 is 1-2 cm.

The thickness of the first adhesive layer 2 and the second adhesive layer 4 is 0.1-0.15 cm.

The thickness of the tearing-off mold layer is more than the sum of the thicknesses of the polyurethane block layer 3 and the second adhesive layer 4.

The thickness of the polyurethane block layer is 0.2-0.3 cm.

The sand planting is one of static sand planting, spraying sand feeding and gravity sand planting.

Above embodiment only is for explaining the utility model discloses a technical thought can not be injectd with this the utility model discloses a protection scope, all according to the utility model provides a technical thought, any change of doing on technical scheme basis all falls into the utility model discloses within the protection scope.

Claims (2)

1. A flexible sponge sand paper is characterized in that the sponge sand sequentially comprises a sponge layer, a first adhesive layer, a polyurethane block layer, a second adhesive layer and a sand layer from bottom to top, the sand layer is obtained by planting sand after a mold tearing layer is torn off, and the mold tearing layer is positioned on the second adhesive layer and in a gap between the polyurethane block layer;

the sand layer is selected from one of silicon carbide, zirconia alumina and white quartz sand;

the viscosity of the first adhesive layer is obviously greater than that of the second adhesive layer;

the first glue layer is selected from phenolic resin or urea resin;

the second adhesive layer is selected from epoxy resin;

the thickness of the sponge layer is 1-2 cm;

the sum of the thicknesses of the first adhesive layer and the second adhesive layer is 0.1-0.15 cm;

the thickness of the polyurethane block layer is 0.2-0.3 cm.

2. The flexible sponge abrasive paper according to claim 1, wherein the sand-planted sand is one of electrostatic sand-planted sand, sprayed sand-planted sand or gravity sand-planted sand.

Images